Air conditioning unit



A an-i126, 1938. A. F. L. ANDERSON AIR CONDITIONING UNIT Filed June 24, 1936 5 Sheets-Sheet l r 5 Mi r w NM m 50 0 w N 7 IA. YA

April 1938. A. F. ANDERSON 12,115,567

AIR CONDITIONING UNIT Filed June 24, 1936 5 Sheets-Shes: 2

AXEL F. L. ANDERSON.

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ATTORNEYS April 26, 1938. A. F. 1.. ANDERSON AIR CONDITI ONING UNIT IIVVE/VTOI? 8y 2X51! F; L. ANDf/PiO/V.

5 Sheets-Sheet 3 Filed June 24, 1936 ::I1 ":IJILZIZIZZ- April 26, 1938.

5 Sheets-Sheet 4 3 Filed June 24, 1936 mm H MN Q vw N w 3 Q a v F m .& Mm m m 0 mm mm o H mm m p \H Mm m% QWV QM YNM. 5% mm mm m fi mu R mw April 26, 1938.

A. F. L. ANDERSON AIR CONDITIONING UNIT 5 Sheets-Sheet 5 Filed June 24, 1936 m vewro)? AXEL E L. ANDERSON.

Patented Apr. 26, 1938 UNITED STATES PATENT OFFICE AIR CUNDITlIONING UNIT Axel F. l. Anderson, Detroit, Mich, assignor to American Blower Corporation, Detroit, Mich, a corporation of Delaware an air conditioning ing, humidifying, changing the temperature of the air, and of delivering the air noiselessly at a predetermined temperature, degree of moisture content, and standard of cleanliness.

It is my object to provide a support for the operating structure and aframework for supporting the various elements of the operating structure in predetermined relationship to a decorative casing covering and enclosing the operating parts.

It is my object to provide such a casing to which access may be readily had to those parts of the apparatus that need adjustment, cleaning and replacement.

It is a further object to provide a novel means of supporting and permitting the removal of a unit filter.

It is a further object to provide a novel means of humidification that is simple and effective with a humidifying means that can be controlled as to the fineness of the humidifying spray without the necessity of changing the delivery of the water to the humidifying means.

It is a further object to provide a novel means of supporting for the removal of a heating or cooling radiator.

It is an object to provide in this combination a substantially sound-proof air delivery passageway so that a fan may be used travelling at relatively high speeds and delivering the air at substantial velocities without any appreciable noise, despite the fact of the useof a thin sheet metal construction.

It. is a further object of my invention to provide a novel means for the circulation of air to maintain the driving motor for the fan at a proper temperature.

It is a further object to provide a heating and ventilating unit adapted to deliver a broad, relatively shallow stream of conditioned air into the enclosure in which it is located.

Referring to the drawings:

Figure 1 is a perspective of a unit from the inlet end thereof.

Figure 2 is a similar perspective from the outlet end thereof.

Figure 3 is a section on the line 33 oi Figure 6.

ure 8.

1936, Serial No. 87,031

Figure 5 is a section on the line 5-5 of Figure 6.

'Figure 6 is a section on the line 6-6 of Figure 3 looking downwardly.

ure 6. t

Figure 8 is a section on the line '88 of Figure 6.

Figure 9 is a diagrammatic view in the form of a horizontal section through the humidifying chamber.

Figure 10 is a diagrammatic view in the form of a vertical section through the humidifying chamber.

Referring to the drawings in detail, I designates the top outside cover of the exterior casing of the unit. '2 designates the end casing which houses the removable filter 3. The air enters the casing through this filter. 4 designates the bottom of the cabinet. 5 is a permanent side wall locatedbetween the removable panels 5 and l, which are provided with handles 8.

The other side of the casing is provided with a similar stationary panel 9 and with removable panels l0 and H. These removable panels are flush with the stationa y panels 5 and 9 and are inset into turned-over flanges l2 formed on the panels 9 and upon the adjacent end members 2 and l3. it constitutes an end casing which is provided with an outlet passageway I 4. The panels I5, I, it and H .are detachably retained in place by any suitable latch means (not shown) Filter assembly The end casing generally designated 2 consists of vertically disposed chambers lfiand it formed by the rounded corner plates ll. Vertically disposed guide plates I8 and I9 guide the vertical side walls 20 of the filter 3. The inlet passageway is formed by a marginal flange or plate 2i which has turned-over edges 22 forming guides for the filter 3. The plates l8 and I9 have similar'turned-over flanges 23 which form corresponding guides for the opposite portions of the filter 3. Across the top of the filter is a horizontal passageway 2 1. The bottom of this passageway is formed by the horizontal plate 25 that forms the top support for the flange 2| about the air inlet opening.

The vertically disposed guide plates l8 and I9 and their turned-over edges or flanges 23, with the flanges 22 of plate 2l-, the lower portion of the end casing 2 and the curved sliding plate 26, form a filter cradle which is closed when the plate Figure '7 is a section on the line 'l--l of Figcasing 2, as shown in Figure 8.

26 is disposed over the aperture 2a in the end The cradle may be opened, for removal of the filter, by releasing the plate 26 from the weight of the filter frame and withdrawing the plate 26 from the aperture 2a as shown in Figure 5. When the cradle is open, the filter frame may be removed through aperture 2a and a new filter frame substituted therefor. The weight of the filter frame, which normally rests directly upon the sliding plate 26, retains the sliding plate in position over the ap erture 2a. When, however, the plate 26 is relieved of the weight of the filter frame, it may be freely manually moved from the closed position (Figure 8) to the open position (Figure 5). One of the features of this unit is that the filter supporting cradle is a part of the outside casing and is in no Way connected to the inner casing.

Humidifier After the air passes through the filter, it enters a humidifying chamber 21, which consists of side walls 28, a top 29, and a sloping bottom plate 30 which is mounted on bracket 3| upon the floor plate 4. 3 la indicates felt pads between the bottom of the support 3| and the floor 4.

A metal plate 32 is secured to the rod 33 which is pivoted at the point where it passes through the side walls 28. This plate carries a removable sheet of glass 34 upon which impinges the water spray from the humidifying nozzle 36. By adjusting the angularity of the glass plate 34, the area of impact may be adjusted whereby the degree of fineness of the spray may be regulated and humidification correspondingly controlled. The adjustment of this plate is effected by the pivot rod 33 which extends outside of the wall 28 and is provided with an adjusting handle or head 330.. It will be noted that the humidifying chamber is spaced from the side walls of the cabinet. The water is supplied to the nozzle 36 by a suitable pipe 31.

Referring particularly to Figures 9 and 10, it will be observed that I have produced a proper distribution of the mist caused by the water impinging on the glass distribution plate 34. This distribution is important inorder to obtain an intimate mixture of the air and mist to produce suflicient evaporation. The design of this humidifier chamber is also such that the time ele ment during which the mist is in contact with the air before striking the heating and eliminating surface is made as long as possible in order to increase the eificiency of evaporation. In the drawings Figures 9 and 10, it will be observed that the top 29 of the humidifier chamber 21 is carried down at the air entering end and the sides 28 are carried inwardly so as to leave an opening of smaller area than that of the cross section of the humidifying chamber. This produces a higher velocity of air through this opening which in turn produces low pressure areas in the corners marked A, B and C. This low pressure area pulls the mist from the target or impact plate 34 towards the air entering end of the chamber so that it is mixed with the air throughout the entire length of the chamber, instead of only from a point near the center of the chamber where the mist is produced. The low pressure areas at B and C also serve to spread the mist transversely across the chamber, thus producing an intimate mixture of the air and spray across the entire cross section of the chamber,

Radiator The air passes through the chamber 2'! over the radiator 38 consisting of a plurality of pipes 39, headers 40 and fins 4|. The radiator is supplied with cooling or heating fluids or gases through the pipes 42 or 43.

This radiator is positioned by the inwardly turned flanges 44 formed on the walls of the tion. A similar plate member 49 is provided'at the top of the radiator. The upper plate 49 has 1 its flanges 50 engaging with grooves 5! and 52 formed in the roof sections 29 and 53 respectively of the humidifying chamber 21 and the fan chamber 41. The bottom flanged plate 49 has its flanges 50 overlapping and engaging the outside of the flanges of the U-shaped support 48. Thus a positioning guide, support and trackway are formed for the ready introduction and removal of the radiator.

The flanged or trough-shaped plate members 49 are retained on the headers 46 by the screws 49a. This construction of the interengaging flanges 50, 5! and 52 provides an air-tight joint between the radiator and the supporting casing.

The bottom plate 30 extends beneath the radiator to the drain 54, whence it extends towards the outlet end of the casing upwardly to form- M otor mounting The forward end of the fan chamber 47 'is provided with a front wall 56 that has openings 51 and 58 to permit of access to the fan wheel and shaft and provide for circulation of air over the motor by permitting the fan to draw air from the motor to the fan chamber as shown by the arrows in Figures '2 and 8. The motor 59 is supported upon a heavy plate 56a mounted on the end plate or front wall 56. The support 56a. is a heavy plate weighing at least one-third as much as the motor and which when used in conjunction with the rubber mounting built integral with the motor eliminates the transmission of motor noises to the unit.

The motor has mounted on its armature shaft a pulley 60 driving a belt 5i and a pulley 62, which in turn is mounted upon the fan shaft 63 that is supported in bearing blocks 64 mounted on the brackets 65 which in turn are supported on the side walls 46 of the chamber 41. l'he conduit for housing the cables supplying current to the motor is carried on the exterior of the several chambers described, between the outside of those chambers and the outside casing of the cabinet.

Fan discharge tion or sound deadening material 73 which is retained in position on the bottom of the air exit passageway 14, the outer end of which is formed with a shoulder 15 for cooperatively retaining the sheet 13 in position.

The air exit passageway is provided with an inner end wall that is diagonally disposed as at 16. This wall is provided with a sheet of sound deadening material 11, the lower end of which rests at 18 upon the top of the cover 53. The top of the air exit passageway is designated l9 and has its inner lining of sound deadening material, the outer end of which is set in the recessed end 8! of the top I9.

Likewise the side walls 82 and B3 are provided with sound deadening sheets at, the outer ends of which are set in the recessed ends 850i the side walls 82 and 83.

It will be observed that the top and bottom walls of the outlet passageway diverge from one another towards the outlet opening formed by the annular sheet 86. The divergence of the side walls 82 and 83, however, is much more marked. The delivery of the air from the fan is in a direction against the sound deadening sheet 80 and partially against the sheet 11. The air is deflected and its direction changed and the air is permitted to expand vertically and horizontally with a corresponding reduction in noise, while providing a broad flat stream of conditioned air to insure adequate distribution in the enclosure to which the conditioned air'is being delivered.

The bottom plate 30-55 which is mounted upon the supports 3| has a flange 30a turned up around the walls of the chambers formed on top of it by the enclosing sheets. The upper cover I is provided with rubber buffer blocks 81 which are bolted to the metal sheets at 88 and are supported in position by the sheet metal cradles 89 for the buffer blocks. The blocks 81 are provided with apertures corresponding with corresponding apertures in the cover I through which bolts for suspending the unit may be inserted so that it will be supported resiliently.

The inner assembly is a complete self-sustaining unit which is supported directly by the hanger rods through the rubber pads 81. The outer casing is then supported by the inner assembly, being attached to the inner assembly by means of bolts 88 and supports 3 I The inner casing, therefore, is supported by the hanger bolts and the outer casing or shell is supported upon the inner casing.

It will be understood that I desire to comprehend within my invention such modifications as may be necessary to adapt it to varying conditions and uses.

Having thus fully described my invention, what I claim as new and desire to secure by Letters and the outside casing over said motor, and means of conveying the main body of air from the air directing casing out of the main casing.

2. In an air conditioning unit having air inlet and exit openings at opposite ends in the main casing, a main casing, and a supplementary casing resiliently mounted therein on the bottom thereof, said supplementary casing'having its air exit passageway connected to and projecting through the air exit opening of the main casing.

3. In an air conditioning unit, means to form an air passageway having a transversely arranged space for receiving a radiator, grinding means on the top and bottom of the margins of said space for guiding and positioning a radiator, and a radiator having interengaging flanges on the top and bottom thereof for engaging with said guide means.

4. In combination, a radiator comprising headers and interconnecting tubes and heat radiating fins; U-shaped plates mounted on the respective ends of the headers having outwardly projecting marginal flanges extending parallel to the tubes connecting the headers; and an air conveying passageway having guiding flanges spaced from one another adapted to receive the flanges on the sides of said radiator whereby said radiator is positioned across said passageway and the plates on the radiator cover and close the space in the passageway.

5. In combination, a casing having a restricted inlet of lesser diameter than the diameter of the casing, a spray means adapted to deliver a spray transversely of air entering said air inlet, said casing having an oppositely disposed air outlet, and a baflie plate adjustably suspendedabove said spray and partially in line with the. passage of said air whereby turbulent areas of lower pressure are formed in the corners adjacent to the entering opening adapted to pull the spray mist from the plate into said comers and to evenly distribute the mist throughout the humidifying chamber.

6. In combination, a humidifying chamber comprising side and top walls and having oppositely disposed air inlet and exit openings; plates extending from the sides, top and bottom of said casing partially across said air inlet opening to form low pressure areas within the corners of said casing adjacent the air inlet opening, a spray means opposite said opening, and a bafile plate adjacent said opening for receiving said spray and distributing it whereby the spray is deflected against the incoming air and is deflected laterally into the low pressure areas in said casing in order to distribute the spray.

'7. In an air conditioning unit, a main casing having air inlet and eidt openings at opposite ends, a supplementary casing therein and resiliently mounted on the bottom thereof, air conditioning apparatus in said supplementary casing including'a fan and apparatus connected by pipes.

to the exterior of said main casing, said supplementary casing being sufliciently spaced from the walls of the main casing to accommodate a driving motor and driving mechanism for said fan, and piping associated with the unit.

AXEL F. L. ANDERSON. 

